Battery Compatible with Motorola RDU4100 Radio - 7.4V 1200 mAH Li-ION

In this review the reviewer looks at a slim, 7.4V 1200 mAH lithium-ion replacement battery intended for Motorola RDU4100 series radios. The bottom line: this battery is for users who need an economical, brand-new replacement that matches original equipment form and function without extra bulk. It earns attention because it promises compatibility with a long list of Motorola models and replacement part numbers, and it ships with a 12 month warranty that guarantees the pack will retain at least 80% of rated capacity for a year.

Key Features

• 7.4V 1200 mAH Li-ION: Provides a balance of runtime and compact size so radios stay usable through a typical shift while keeping the pack slim.
• Premium quality, brand new: Arrives as a new cell assembly rather than refurbished, which reduces the risk of premature capacity loss on arrival.
• 100% compatible with original equipment: Fits and interfaces with Motorola RDU4100 series and many other models without modification or adapters.
• 12 month warranty: The included warranty covers capacity retention and defects for a full year from shipment, offering added confidence for field use.
• Wide model coverage: Listed replacement P/Ns and compatible radio models make it straightforward to confirm fit for several Motorola and Vertex-Standard devices.

Who It's For

This battery is best for professionals and hobbyists who already use Motorola RDU4100, RDU4103, RDU4160 series radios or compatible Vertex-Standard models and need a slim, lightweight replacement pack that preserves the radio's original form factor. It suits users who value straightforward compatibility and prefer a new Li-ION pack backed by a 12 month warranty.

Those who should look elsewhere include operators requiring extended runtime beyond what 1200 mAH provides or teams that mandate factory-authorized branded batteries for warranty compliance; in those cases higher-capacity or OEM-labeled packs may be a better match.

Pros & Cons

Pros

• Slim 7.4V 1200 mAH design keeps the radio compact while restoring usable battery life.
• Brand new premium construction reduces the likelihood of early capacity issues compared with unknown used cells.
• Broad compatibility list and many replacement part numbers make verifying fit easy.
• 12 month warranty that guarantees at least 80% rated capacity for 12 months adds reassurance.

Cons

• 1200 mAH capacity is modest compared with higher-capacity packs, so heavy users may need spares or more frequent charging.
• Not an OEM-branded pack, which may matter for organizations that require manufacturer-labeled parts.

Specifications

Our Verdict

For users who need a compact, reliable replacement for Motorola RDU4100 and related radios, this 7.4V 1200 mAH Li-ION pack represents good value: it restores portability, is sold as brand new, and is covered by a 12 month capacity warranty. Those needing longer runtime or strict OEM branding should consider higher-capacity or manufacturer-labeled alternatives, but for most field operators this battery is a practical, cost-conscious choice.

Frequently Asked Questions

Will this battery fit my RDU4103 radio?
Yes, the pack is listed as compatible with RDU4103 and related RDU4100 series models.

How long is the warranty and what does it cover?
The battery includes a 12 month warranty that guarantees at least 80% of rated capacity for 12 months from shipment and covers defects.

Is this an OEM Motorola battery?
No, this is a premium third-party replacement designed to be fully compatible with the original equipment rather than an OEM-branded pack.